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2. The Scale of the Universe - Wikipedia

   en.wikipedia.org/wiki/The_Scale_of_the_Universe

   [6] [7] [8] The current version of The Scale of the Universe 2 uses Pixi.js instead of Flash, ported by Matthew Martori. [6] The Scale of the Universe was featured on NASA's Astronomy Picture of the Day on October 7, 2018. [9] In 2020, animation studio Kurzgesagt released the app Universe in a Nutshell, which took inspiration from The Scale of ...

3. Great Debate (astronomy) - Wikipedia

   en.wikipedia.org/wiki/Great_Debate_(astronomy)

   The two scientists first presented independent technical papers about "The Scale of the Universe" during the day and then took part in a joint discussion that evening. Much of the lore of the Great Debate grew out of two papers published by Shapley and by Curtis in the May 1921 issue of the Bulletin of the National Research Council .

4. Cosmological horizon - Wikipedia

   en.wikipedia.org/wiki/Cosmological_horizon

   It represents the boundary between the observable and the unobservable regions of the universe, so its distance at the present epoch defines the size of the observable universe. Due to the expansion of the universe, it is not simply the age of the universe times the speed of light, as in the Hubble horizon, but rather the speed of light ...

5. Planck units - Wikipedia

   en.wikipedia.org/wiki/Planck_units

   This mass-radius log plot of all the universe demonstrates it visually In particle physics and physical cosmology , the Planck scale is an energy scale around 1.22 × 10 28 eV (the Planck energy, corresponding to the energy equivalent of the Planck mass, 2.176 45 × 10 −8 kg ) at which quantum effects of gravity become significant.

6. Universe - Wikipedia

   en.wikipedia.org/wiki/Universe

   The portion of the universe that can be seen by humans is approximately 93 billion light-years in diameter at present, but the total size of the universe is not known. [3] Some of the earliest cosmological models of the universe were developed by ancient Greek and Indian philosophers and were geocentric, placing Earth at the center.

7. Enlarge or reduce the font size on your web browser

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   Make web pages easy to read for you! With simple keyboard shortcuts, you can zoom in or out to make text larger or smaller. In an instant, these commands improve the readability of the content you're viewing. • Zoom in - Press Ctrl (CMD on a Mac) + the plus key (+) on your keyboard.